What is the difference between lcd and oled screen

1, display principle: LCD screen mainly rely on the backlight layer, that is, a layer of white light source behind the screen, usually composed of LED lights or fluorescent lamps. After the backlight layer emits white light, it passes through a series of filters, polarizers, liquid crystal layer, color filters, etc., and finally forms a color image.OLED screen does not need a backlight layer, but uses organic light-emitting materials, each pixel can emit light on its own, that is, self-luminous.OLED screen only needs to add electrodes, encapsulation, and other structures on the organic light-emitting materials, which will form a color image.OLED screens can also control the brightness of red, green and blue colors by changing the voltage.

2, the degree of bending: or because of the liquid crystal layer and the existence of the backlight layer, LCD screen is not possible to bend significantly, and OLED can almost fold as casually as origami, Samsung's curved screen is based on OLED technology to do the support.

3, energy consumption: the same are black screen case, OLED does not emit light, LCD is issued by the black light. LCD liquid crystal display to show the effect of color, the need to use color filter film, which will lead to a decline in the overall light efficiency of more than 67%, in addition, the role of the LCD light valves to polarized light as a prerequisite, which in turn led to a loss of 50% of the luminance, there is an analysis of the LCD on the back light source Some analysts say that LCD's utilization of the backlight will not be more than 15%, and 85% of the energy is wasted.OLED is more energy efficient than LCD.